01 - In a shallow dish, combine the flour, salt, black pepper, and paprika. Dredge each cube steak in the seasoned flour mixture, coating both sides evenly. Shake off any excess and reserve 2 tablespoons of the seasoned flour for the gravy.
02 - Heat the vegetable oil and 1 tablespoon of butter in a large skillet over medium-high heat. Once the butter is foaming, add the cube steaks and sear for 2-3 minutes per side until a golden-brown crust forms. Transfer the steaks to a plate and set aside.
03 - Reduce the heat to medium. Add the remaining tablespoon of butter to the skillet along with the sliced onions and mushrooms. Cook, stirring occasionally, until the onions are softened and the mushrooms are deeply browned, about 6-8 minutes.
04 - Add the minced garlic and the reserved seasoned flour to the skillet. Stir continuously for 1 minute to cook off the raw flour taste and bloom the garlic.
05 - Slowly pour in the beef broth and Worcestershire sauce, stirring constantly and scraping up any browned bits from the bottom of the skillet. Stir in the milk and bring the mixture to a gentle simmer.
06 - Return the seared cube steaks to the skillet, nestling them down into the gravy. Cover with a lid, reduce the heat to low, and simmer for 20 minutes, or until the steaks are fork-tender and the gravy has thickened to a rich consistency.
07 - Taste the gravy and adjust the seasoning with additional salt and pepper if needed. Transfer to serving plates, spoon the gravy generously over each steak, and garnish with freshly chopped parsley.